Wood planing machine



Ma lz, 1931 L. E. BLOOD ET AL WOOD PLANING MACHINE Filed Aug. 12, 1929 2 Sheets-Sheet l Laimenoeli! BZoOd JbZanB. W vol @rWcfl May 12, 1931.

| E. BLOODET AL WOOD PLANING'MACHINE Filed Aug. 12, 1929 2 Sheets-Sheet 2 vii/Q s Im eaaifoaai- Lazmencelitflzood JoimB. Wd I 21 ,43 M fl v LAURENCE 131.001), ornios'roiv, nn Joni;- matinee,

- 9 'rollsi profiler 'headsyetc.

' Patented May 12, 193iv sn'rrs, ASSIGNORS rosin. woons ivmoninrifgo lrrnny A CORPORATION or mnssncnnsmrs, r

a e sapemm f MASSA/GHU; orgaosron, MASSACHUSETTS,

woon

n nc'atimmea A ie-12,1929;sriarnassasas;' i

This invention relates to wood [planing machines, and the object is o to provide in such a machine an improved constructionand arrangement of parts facilitating their use d particularly with reference to stoppages and jams due to improper passage of the boards therethrough Our invention will be well understood by reference to the following description of "an illustrative embodiment :thereof shown v" by; way of example merely in the annexed draw l p p H neathithetape'red overhang ng ro1ls,- 19, or

in gs,- wherein Fig. 1' is a simplified and jdiagrarnrnatic? 1 tiongwith t plan viewof a portion of aiplaner and as sociated feed table; f f j p a Fig. 2'is a-sini'ilar side" elevation; I Figi 3is a-"broke'n sideelevation of the giiide I and stop mechanisms interyeningibe, tween the planer{proper and ing'diagram; and" a r Fig. at is a side 1 seen from therightofFig-fi;

we have shown at the 3 cut to Blood "1,704,677 ,c this 'feedingi-meoha-Y nism being driven herein by the "reversible. electric motor 11. will be understood that the planing 7 machine tomary bottomhead, side heads, feeding-out type maybe when operatedatahigh speeds it isnsiial to incorporate, essentiallyas apart of the machine and beltedo thereto totake I power from its drivingshaft, afeedingz, means in the nature of "a-feed' table adaptedto deliver a; series of boards to the feeding rolls 9; Such:

.a feed table rims; faster than; the feeding .means 9to ofboards.

w the feed'jtable and has associated therewith :a partial :wir-f elevation ofthe sanoe; as;

Referring to Figs. 1 and 2'of thedrawi'nga; left of those] figures-x ,a' portion of the planer proper (which'word we'use in a generic se'nse'to include not only the machines technically-known as planersj Y but surfacers matchers, molders and the like) having atophead hereinshownas having an integral drive from'electrio niotor 7 beneathv which 'headthe work is 5 advanced may embody the cus- A'machine of-this fed by hand, i but particularly provide an uninterrupted stream .1 o the a right. 1 V and '2 ,weghave v shownasnitable; feed table which may embody the spirally ribbed rolls 13 adapted to feedgboards laterally against a guide oi-fence,

1:5- in5 the line offeeds' The boards, one or:

more at a. time, are thrown carelessly onythe tableand acted on by thefrolls l3, audit-he v fence 21 preventsrtheir passing forward (ex-- cept alongthefguide 1-5;, suitable project llflg" 5130p 17ipg1fmll3SpOI1ly;lillQlOWGIIDOSt board to move over against; this guide and bes'o-called: pineapple rolls, which .in' cooperathe bo'ard, lpress :it firmly against the 5 guide and; discharge it rapidly past therestraining e; ribbedirolls underneath seize (fence 21fthroughftheffeed conple22jand to 7 theyfeed mechanism 90f the planer proper.

In accordance with'fonn invention we pro-' vide -for the feedtable annindependent, sepairatelyg controllable; gnid-e providing advane trio Inotor;;23-Zwhichdelivers power to the tions illijistrated in-a generalway in Fig. 1 and not; 'necessaryherein to describe detail." "The feeditable, may deliver the boards along the backignide 25 interposed between the ta-' bleand theplanernnder a yieldable topguide 27;,lierein sho,wn as coinprising a pair, of bars suspended by linksQQandBl froin stands- 33 and 35" respectively, the stands being supportedion,gnide'25q;"Aspring??? may be interp'ose'di between stand 33Jand link' 29 yield ably to pressfthe top g'uide 2'1 downward, and

the tension ofthis spring maybe adjusted by "tagesgi juseas will hereinafter appear; We I have-herein shown-a separatereyersible elecineans ofthe gbolt 39,:rworking in the arcshaped groove S l in thestand. Thenpper end of link, 29 mayzfbe extended to. contact with I the adjustable screw 4i3 rnountedinfa lug on stand133 and providing ;a ,stop limiting the; downward niovementofrgnidefi'lg V ,In the embodiment of'onr' inyention herein shown wevprovidean automatic stop operating,in snchmannerthatwhen any abnormal conditions in the feedoccur, the powerwill be shutiofffrom motor 23; In the embodiment of the invention shown the abnormality is an undue thicknessof workf passing .tothe planer such as would be occasioned by one board riding up on top of another and the top guide '27 is utilized as a feeler to detect this condi-- cooperate with a cam roll 49011 an actuating arm 51 operating a switch 53 in the circuit of motor 23. The switch mechanism may be supported on a shelfor bracket 55 projecting from stand 33. The parts being adjusted, for

example to the position shown inFig. 3, if 5 the top guide 27 is unduly lifted, wiper 47 swings clockwise, depressing arm 51 and throwing open the switch and stopping the 7 motor and the feed table driven thereby while permitting the feed 9 of the planer proper to continue in motion. There is thus no danger p of one board piling up on top of another and a board under control of the feed table couldjamming'into the feed mechanism 9 while thatmechanism may, if it is within its power, -continue to draw forward the board engaged V f therewith, clearing the jam and not interrupting the action of the planing machine. If

the jam is cleared away, the top guide 27 will,

descend, the motor 23 may again be made to v 7 function and the rapidlyoperating feed table. 7 30 will feed forward a board to catch up with I i the precedingone in the planer. The feed motor 11 may be stopped, reversed by means of switch 57 or otherwise manipulated to help clear out the jam without embarrassment from the action of the feed table which is out of action independently of the feed 9.

Thecontrolmeans 61 is preferably soconstructed that thecircuit to motor "23' may be completed, by-pa'ssing switch 57, and the mo- 0 tor 23 may betemporarily operated independ entlyofthe switch 57 being open. Thus'the motor 23 in some instances might be reversed to draw backwardly the board causing the jam, or'it could be repeatedly reversed so that be reciprocated to serve as a hammer to help clear" out the jam ahead.

"-We'a're' aware'that the invention may be embodied in' other specific forms without de- 0 parting from the spirit or essential attributes thereof,,and we therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to 5 the foregoing description to indicate the scope'of the invention.

Claims: p

1. In'c'ombination with a planing mechanism includingplaning knives and a feed ing' means for traversing a board past the same, an overrunning feeding meansfor deliveringboards from a supply to said first :fee'ding means, and means individually controllable for independently driving either 5 or both of said feeding means.

separately controllable and reversible drive for said second means.

In combination with a planing mechanism including planing knives and a feeding means for traversing a board past the same, an overrunning feeding means for deiivering boards from a supply to said first feeding means, means for driving said feeding means, and means including a feeler interposed between said feeding means and adapted to be actuated'on occurrence of ab normalconditions in the passage of boards past the same to interrupt the drive of said overrui'inin g feeding means while permitting continued operation of the other.

4. In combination with a planer and its feeding mechanism, a motor driving said mechanism, a relatively fast feedtable delivering to said mechanism, a driving motor therefor, av yieldable guide past which the boards move between the planer and table, and an automatic stop for the feed table m0- tor actuatedon abnormal movement of'the guide. y

l 5; In combination with a planer and its feeding mechanism, a motorfor driving the mechanism, a relatively fast feed table delivering to said mechanism, a reversible electric motor driving thetable, a switch in the circuit of said motor, a feeler betweenplaner and table adapted to be displaced by an abnormally fed board to actuate the switch,

"Ice

and controlling mechanism for. the motor- 4 7 fed from links, a switch for the circuit of said motor hnving an operating arm and a wiper turning with one of said links for acting on said arm. 7

7. In combination with a feed table adapted to bring boardsinto a line of feed and feed them forward successively to a planing machine, an electric motor for driving the same, yielding top guide beneath which theboards are, fed comprising a bar suspended from links, a switch for the circuitof said motor I having an operating arm, one of said links having an extended pivot and a wiper secured v on said pivot for angular adjustment adapted to act on said arm on abnormal movement of the guide. 1

8. A controlling means for a planer feed table comprising a stand for attachment toa V back guide, a transverse shaft pivoted therein, a link on saidshaftifornsuspending a top. guide, a spring interposed between said v link and stand, means for adjusting the spring-an adjustable stop for the link on said stand, and a-Wiper on the end ofthe shaft adapted to actuate a power control device'for the table, said stand having provisionfor 7 them forward successivelytoa planing ma 7 chine, anele'ctric motor for driving the same, a" yielding member past which the boards are fed a Wiper arm turned inthe yielding move ment of the 1nen1ber,and a switch for the oir- 'cuit of said motor having an operatingarm acted on by said jwiper on abnormal moveinent of the member. I r

In testimony Whereofiwe havesigned our supporting that portionof said device which is directly actuated. 5 g g 9.4 In combination with a feedvtable adapt- I ed to bring boards into a line of feeda-ndfeed names to this specification.

LAURENCE E; BLOOD.

JOHN YWIABD. 1 V 

